| Clayton to Redondela | 853.45 mi (1,373.49 km) |
| Clayton to Reinosa | 752.32 mi (1,210.74 km) |
| Clayton to Requena | 988.31 mi (1,590.54 km) |
| Clayton to Reus | 882.86 mi (1,420.83 km) |
| Clayton to Rianxo | 833.01 mi (1,340.60 km) |
| Clayton to Ribadeo | 746.69 mi (1,201.68 km) |
| Clayton to Rincon de la Victoria | 1,185.02 mi (1,907.10 km) |
| Clayton to Ripoll | 820.96 mi (1,321.21 km) |
| Clayton to Ripollet | 868.36 mi (1,397.50 km) |
| Clayton to Rojales | 1,085.54 mi (1,747.01 km) |
| Clayton to Ronda | 1,188.57 mi (1,912.82 km) |
| Clayton to Roquetas de Mar | 1,176.44 mi (1,893.30 km) |
| Clayton to Rosas | 828.06 mi (1,332.63 km) |
| Clayton to Rubi | 867.41 mi (1,395.96 km) |
| Clayton to Rute | 1,144.14 mi (1,841.31 km) |
